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    <title>clEnqueueAcquireD3D10ObjectsKHR</title>
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      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="clEnqueueAcquireD3D10ObjectsKHR"></a>
        <h1>clEnqueueAcquireD3D10ObjectsKHR</h1>
        <p>Acquire OpenCL memory objects that have been created from Direct3D 10 resources</p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                <a class="link" href="scalarDataTypes.html" target="_top">cl_int</a> 
                    <strong class="fsfunc">clEnqueueAcquireD3D10ObjectsKHR</strong>(</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_command_queue</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">command_queue</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">cl_uint</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_objects</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_mem</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*mem_objects</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">cl_uint</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_events_in_wait_list</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_event</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event_wait_list</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_event</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event</var><code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="parameters"></a>
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <code class="varname">command_queue</code>
              </span>
            </dt>
            <dd>
              <p>
                    A valid command-queue.
                </p>
            </dd>
            <dt>
              <span class="term">
                <code class="varname">num_objects</code>
              </span>
            </dt>
            <dd>
              <p>
                    The number of memory objects to be acquired in <code class="varname">mem_objects</code>.
                </p>
            </dd>
            <dt>
              <span class="term">
                <code class="varname">mem_objects</code>
              </span>
            </dt>
            <dd>
              <p>
                     A pointer to a list of OpenCL memory objects that were created from 
                     Direct3D 10 resources.
                </p>
            </dd>
            <dt>
              <span class="term"><code class="varname">num_events_in_wait_list</code>, <code class="varname">event_wait_list</code></span>
            </dt>
            <dd>
              <p>
                     Specify events that need to complete before this particular command can be executed. 
                     If <code class="varname">event_wait_list</code> is NULL, then this particular command does not 
                     wait on any event to complete. If <code class="varname">event_wait_list</code> is NULL, 
                     <code class="varname">num_events_in_wait_list</code> must be 0. If <code class="varname">event_wait_list</code> 
                     is not NULL, the list of events pointed to by <code class="varname">event_wait_list</code> must be 
                     valid and <code class="varname">num_events_in_wait_list</code> must be greater than 0. The events 
                     specified in <code class="varname">event_wait_list</code> act as synchronization points.
                </p>
            </dd>
            <dt>
              <span class="term">
                <code class="varname">event</code>
              </span>
            </dt>
            <dd>
              <p>
                     An event object that identifies this particular command and can be used to query 
                     or queue a wait for this particular command to complete. <code class="varname">event</code> can 
                     be NULL in which case it will not be possible for the application to query the status 
                     of this command or queue a wait for this command to complete.
                </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
            The Direct3D 10 objects are acquired by the OpenCL context associated with 
            <code class="varname">command-queue</code> and can therefore be used by all command-queues 
            associated with the OpenCL context. 
        </p>
        <p>
            OpenCL memory objects created from Direct3D 10 resources must be acquired before 
            they can be used by any OpenCL commands queued to a command-queue. If an OpenCL memory 
            object created from a Direct3D 10 resource is used while it is not currently acquired 
            by OpenCL, the call attempting to use that OpenCL memory object will return 
            CL_D3D10_RESOURCE_NOT_ACQUIRED_KHR.
        </p>
        <p>
            <code class="function">clEnqueueAcquireD3D10ObjectsKHR</code> provides the synchronization guarantee 
            that any Direct3D 10 calls made before <code class="function">clEnqueueAcquireD3D10ObjectsKHR</code>
            is called will complete executing before <code class="varname">event</code> reports completion and before 
            the execution of any subsequent OpenCL work issued in <code class="varname">command_queue</code> begins.
        </p>
      </div>
      <div class="refsect1">
        <a id="errors"></a>
        <h2>Errors</h2>
        <p>
            Returns <span class="errorname">CL_SUCCESS</span> returns <span class="errorname">CL_SUCCESS</span> if the function 
            is executed successfully. If &lt;<code class="varname">num_objects</code>&gt; is 0 and 
            &lt;<code class="varname">mem_objects</code>&gt; is NULL then the function does nothing and returns 
            <span class="errorname">CL_SUCCESS</span>. Otherwise it returns one of the following errors:
        </p>
        <div class="itemizedlist">
          <ul class="itemizedlist" style="list-style-type: disc; ">
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">num_objects</code> is zero and
                <code class="varname">mem_objects</code> is not a NULL value or if <code class="varname">num_objects</code>
                &gt; 0 and <code class="varname">mem_objects</code> is NULL.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_MEM_OBJECT</span> if memory objects in <code class="varname">mem_objects</code>
                are not valid OpenCL memory objects or if memory objects in <code class="varname">mem_objects</code> have 
                not been created from Direct3D 10 resources.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_COMMAND_QUEUE</span> if <code class="varname">command_queue</code> is not 
                a valid command-queue.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if context associated with 
                <code class="varname">command_queue</code> was not created from an Direct3D 10 context.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_D3D10_RESOURCE_ALREADY_ACQUIRED_KHR</span> if memory objects in 
                <code class="varname">mem_objects</code> is not have previously been acquired using
                <code class="function">clEnqueueAcquireD3D10ObjectsKHR</code> but have not been released using 
                <a class="citerefentry" href="clEnqueueReleaseD3D10ObjectsKHR.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReleaseD3D10ObjectsKHR</span></span></a>.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_EVENT_WAIT_LIST</span> if <code class="varname">event_wait_list</code> is 
                NULL and <code class="varname">num_event_in_wait_list</code> &gt; 0, or <code class="varname">event_wait_list</code> 
                is  not NULL and <code class="varname">num_event_in_wait_list</code> is 0, or if event objects in 
                <code class="varname">event_wait_list</code> are not valid events.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there is a failure to allocate 
                resources required by the OpenCL implementation on the host.    
            </li>
          </ul>
        </div>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p><img src="pdficon_small1.gif" />
            <a href="http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf#page=343" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="cl_khr_d3d10_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_d3d10_sharing</span></span></a>,
            <a class="citerefentry" href="clGetDeviceIDsFromD3D10KHR.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceIDsFromD3D10KHR</span></span></a>,  
            <a class="citerefentry" href="clCreateFromD3D10BufferKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10BufferKHR</span></span></a>, 
        <a class="citerefentry" href="clCreateFromD3D10Texture2DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture2DKHR</span></span></a>, 
            <a class="citerefentry" href="clCreateFromD3D10Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture3DKHR</span></span></a>, 
        
            <a class="citerefentry" href="clEnqueueReleaseD3D10ObjectsKHR.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReleaseD3D10ObjectsKHR</span></span></a>
        </p>
      </div>
      <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2010 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
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